My Long List of Amplifiers and My Personal Review of Each!


So I have been in a long journey looking to find the best amplifiers for my martin logan montis. As you know, the match between an amplifier and speakers has to be a good "marriage" and needs to be blend exquisitely. Right now, I think I might have found the best sounding amplifier for martin logan. I have gone through approximately 34-36 amplifiers in the past 12 months. Some of these are:

Bryston ST, SST, SST2 series
NAD M25
PARASOUND HALO
PARASOUND CLASSIC
KRELL TAS
KRELL KAV 500
KRELL CHORUS
ROTEL RMB 1095
CLASSE CT 5300
CLASSE CA 2200
CLASSE CA 5200
MCINTOSH MC 205
CARY AUDIO CINEMA 7
OUTLAW AUDIO 755
LEXICON RX7
PASS LABS XA 30.8
BUTLER AUDIO 5150
ATI SIGNATURE SERIES 6005

With all that said, the amplifiers I mentioned above are the ones that in my opinion are worth mentioning. To make a long story short, there is NO 5 CHANNEL POWER AMP that sounds as good as a 3ch and 2ch amplifier combination. i have done both experiments and the truth is that YOU DO lose details and more channel separation,etc when you select a 5 channel power amplifier of any manufacturer.
My recollection of what each amp sounded like is as follows:

ATI SIGNATURE SERIES 6005 (great power and amazing soundstage. Very low noise floor, BUT this amplifiers NEEDS TO BE cranked up in order to fully enjoy it. If you like listening at low volume levels or somewhat moderate, you are wasting your time here. This amp won’t sound any different than many other brands out there at this volume. The bass is great, good highs although they are a bit bright for my taste)

NAD M25 (very smooth, powerful, but somewhat thin sounding as far as bass goes)
Bryston sst2(detailed, good soundstage, good power, but can be a little forward with certain speakers which could make them ear fatiguing at loud volumes)

Krell (fast sounding, nice bass attack, nice highs, but some detail does get lost with certain speakers)

rotel (good amp for the money, but too bright in my opinion)

cary audio (good sound overall, very musical, but it didn’t have enough oomph)

parasound halo (good detail, great bass, but it still holds back some background detail that i can hear in others)

lexicon (very laid back and smooth. huge power, but if you like more detail or crisper highs, this amp will disappoint you)

McIntosh mc205 (probably the worst multichannel amp given its price point. it was too thin sounding, had detail but lacked bass.

butler audio (good amplifier. very warm and smooth sweet sounding. i think for the money, this is a better amp than the parasound a51)

pass labs (very VERY musical with excellent bass control. You can listen to this for hours and hours without getting ear fatigue. however, it DOES NOT do well in home theater applications if all you have is a 2 channel set up for movies. The midrange gets somewhat "muddy" or very weak sounding that you find yourself trying to turn it up.

classe audio (best amplifier for multi channel applications. i simply COULDNT FIND a better multi channel amplifier PERIOD. IT has amazing smoothness, amazing power and good bass control although i would say krell has much better bass control)

Update: The reviews above were done in January 2015. Below is my newest update as of October 2016:



PS AUDIO BHK 300 MONOBLOCKS: Amazing amps. Tons of detail and really amazing midrange. the bass is amazing too, but the one thing i will say is that those of you with speakers efficiency of 87db and below you will not have all the "loudness" that you may want from time to time. These amps go into protection mode when using a speaker such as the Salon, but only at very loud levels. Maybe 97db and above. If you don’t listen to extreme crazy levels, these amps will please you in every way.

Plinius Odeon 7 channel amp: This is THE BEST multichannel amp i have ever owned. Far , but FAR SUPERIOR to any other multichannel amp i have owned. In my opinion it destroyed all of the multichannel amps i mentioned above and below. The Odeon is an amp that is in a different tier group and it is in a league of its own. Amazing bass, treble and it made my center channel sound more articulate than ever before. The voices where never scrambled with the action scenes. It just separated everything very nicely.

Theta Dreadnaught D: Good detailed amp. Looks very elegant, has a pleasant sound, but i found it a tad too bright for my taste. I thought it was also somewhat "thin" sounding lacking body to the music. could be that it is because it is class d?

Krell Duo 300: Good amp. Nice and detailed with enough power to handle most speakers out there. I found that it does have a very nice "3d" sound through my electrostatics. Nothing to fault here on this amp.
Mark Levinson 532H: Great 2 channel amp. Lots of detail, amazing midrange which is what Mark Levinson is known for. It sounds very holographic and will please those of you looking for more detail and a better midrange. As far as bass, it is there, but it is not going to give you the slam of a pass labs 350.5 or JC1s for example. It is great for those that appreciate classical music, instrumental, etc, but not those of you who love tons of deep bass.

 It is articulate sounding too
Krell 7200: Plenty of detail and enough power for most people. i found that my rear speakers contained more information after installed this amp. One thing that i hated is that you must use xlr cables with this amp or else you lose most of its sound performance when using RCA’s.

Krell 402e: Great amp. Very powerful and will handle any speaker you wish. Power is incredible and with great detail. That said, i didn’t get all the bass that most reviewers mentioned. I thought it was "ok" in regards to bass. It was there, but it didn’t slam me to my listening chair.

Bryston 4B3: Good amp with a complete sound. I think this amp is more laid back than the SST2 version. I think those of you who found the SST2 version of this amp a little too forward with your speakers will definitely benefit from this amp’s warmth. Bryston has gone towards the "warm" side in my opinion with their new SST3 series. As always, they are built like tanks. I wouldn’t call this amp tube-like, but rather closer to what the classe audio delta 2 series sound like which is on the warm side of things.

Parasound JC1s: Good powerful amps. Amazing low end punch (far superior bass than the 402e). This amp is the amp that i consider complete from top to bottom in regards to sound. Nothing is lacking other than perhaps a nicer chassis. Parasound needs to rework their external appearance when they introduce new amps. This amp would sell much more if it had a revised external appearance because the sound is a great bang for the money. It made my 800 Nautilus scream and slam. Again, amazing low end punch.

Simaudio W7: Good detailed amp. This amp reminds me a lot of the Mark Levinson 532h. Great detail and very articulate. I think this amp will go well with bookshelves that are ported in order to compensate for what it lacks when it comes to the bass. That doesn’t mean it has no bass, but when it is no Parasound JC1 either.
Pass labs 350.5: Wow, where do i begin? maybe my first time around with the xa30.8 wasn’t as special as it was with this monster 350.5. It is just SPECTACULAR sounding with my electrostatics. The bass was THE BEST BASS i have ever heard from ANY amp period. The only amp that comes close would be the jC1s. It made me check my settings to make sure the bass was not boosted and kept making my jaw drop each time i heard it. It totally destroyed the krell 402e in every regard. The krell sounded too "flat" when compared to this amp. This amp had amazing mirange with great detail up top. In my opinion, this amp is the best bang for the money. i loved this amp so much that i ended up buying the amp that follows below.

Pass labs 250.8: What can i say here. This is THE BEST STEREO AMP i have ever heard. This amp destroys all the amps i have listed above today to include the pass labs 350.5. It is a refined 350.5 amp. It has more 3d sound which is something the 350.5 lacked. It has a level of detail that i really have never experienced before and the bass was amazing as well. I really thought it was the most complete power amplifier i have ever heard HANDS DOWN. To me, this is a benchmark of an amplifier. This is the amp that others should be judged by. NOTHING is lacking and right now it is the #1 amplifier that i have ever owned.

My current amps are Mcintosh MC601s: i decided to give these 601s a try and they don’t disappoint. They have great detail, HUGE soundstage, MASSIVE power and great midrange/highs. The bass is great, but it is no pass labs 250.8 or 350.5. As far as looks, these are the best looking amps i have ever owned. No contest there. i gotta be honest with you all, i never bought mcintosh monos before because i wasn’t really "wowed" by the mc452, but it could have been also because at that time i was using a processor as a preamp which i no longer do. Today, i own the Mcintosh C1100 2 chassis tube preamp which sounds unbelievable. All the amps i just described above have been amps that i auditioned with the C1100 as a preamp. The MC601s sound great without a doubt, but i will say that if you are looking for THE BEST sound for the money, these would not be it. However, Mcintosh remains UNMATCHED when it comes to looks and also resale value. Every other amp above depreciates much faster than Mcintosh.

That said, my future purchase (when i can find a steal of a deal) will be the Pass labs 350.8. I am tempted to make a preliminary statement which is that i feel this amp could be THE BEST stereo amp under 30k dollars. Again, i will be able to say more and confirm once i own it. I hope this update can help you all in your buying decisions!


128x128jays_audio_lab

Showing 30 responses by cleeds

henry201

... same files so called "CD Quality". SQ on my set up is definitely different.

Interesting!

Which titles did you compare? Are you sure they’re from the same mastering?

henry201

I never stream for critical listening. In my setup, it's never as good as ripped files and definitely not as good as direct from a CD transport (44.1 that is).

That's not uncommon. So much hinges on the specific components and setup.

... if streaming files are ‘untouched’, why there is such clear differences in SQ between Tidal and Qobuz?

Tidal uses MQA, which has been shown to be lossy compression. Qobuz files are unmolested.

henry201

Tidal HiFi service is FLAC, same as Qobuz.

Tidal files are encoded with MQA, a compression scheme. To be properly reproduced, they require an MQA-capable renderer, as described here.

While Tidal claims its files are lossless master quality, others disagree. Neil Young has certainly made his complaints known, and I think this guy’s effort is even more compelling.

So while Tidal and Qobuz each deliver files in FLAC, their files are not the same.

henry201

According to Tidal (which is in the link you just sent), MQA compression scheme is only used on their Master Quality files. I am talking about their "HiFi" service ... Should be the same "CD quality" as Qobuz.

Qobuz doesn't offer a CD quality-only service in my country. I suppose you could find some of its CD quality files and compare them to the same titles on Tidal. I don't think I ever tried that, so I don't know if they sound the same or not.

Is that a comparison you've tried, @henry201 ?

ricevs

... I want people to think on their own ... We are all teachers and we are all students ... people do learn from me.....you could too. I am learning from everyone.......all the time ...

That's a great outlook. I'm not sure why some are bothered by it.

I have no products to promote here......I share freely......I do promote what I think is valuable information that can help people get better sound or a better life. What do you promote?

That's obviously the problem. Jay is now a dealer promoting an expensive alternative to your DIY exploration. But there's room for everyone here.

jays_audio_lab

One particular subject that isn’t talked about here is HOW MUCH CLARITY is too much of a good thing?

If by clarity you mean neutrality, then you can't have "too much of a good thing," imo.

If by clarity you mean a tipped up upper-midrange and pronounced highs, it's easy to have "too much."

viber6

A system that costs almost $1 million should sound lifelike for that guitar at 60-80 dB. If the listener is compelled to boost the SPL by another 10-20 dB, then the system has poor lifelike quality with inferior resolution, OR he wants to abuse himself like drinking too much alcohol.

Let’s give the Jay the benefit of the doubt and rule out alcohol abuse. What I think is happening is what Jay calls "clarity" is actually HF distortion he’s getting as a result of AC problems. Those were detailed earlier in the thread, where there was discussion of issues such as having his audio gear share a 240VAC line with welding equipment or a/c. Jay couldn’t evade the discussion quickly enough, and that’s understandable as he promotes his battery solution to AC problems. What’s unfortunate is that he could correct his AC issues and still promote the Stromtank batteries, but as he’s made clear, he needs to "pick and choose" his approach.

In what little Jay revealed about his AC lines, it’s interesting to note what he didn’t mention: Grounding.

All that HF distortion is why Jay fears hearing "too much clarity" and why he would benefit from having a pro evaluate his electric install, starting at the service panel.

 

If I owned a 1mil system, I would expect " it " to hit peaks of over 100db. My system does it easily, and I never feel it is congested, too detailed, irritating....whatever. What Jay is describing, ime, and this will piss people here off.....is speaker compression

While I enjoy listening to intimate music, there’s nothing like the power of a full orchestra or rock band and, like you @mrdecibel, my system can reproduce most of that pretty effortlessly. It is an exciting experience.

Oftentimes there is more than one underlying cause of a system problem and you may be right that speaker compression is one of Jay’s problems. But it isn’t clear that those issues concern Jay at all. His recent focus seems to be on marketing the Stromtank battery products, but I think his efforts would be even more effective if he addressed these problems. And isn’t that part of the fun of hi-fi?

I already told you - we don't see eye to eye.

Yup, though you've never explained yourself, so I really don't know what you're talking about.

Don't address me.

This is as open forum. If you have a complaint about me, take your complaint to the moderators. I

 

It’s so clear to me that most folks on here aren’t interested in hearing from the "gurus" or "crusaders" who preach HARD ...

I don’t see anyone "preaching" here. What are the comments that you think "most folks" find objectionable? Why not bring your complaint to the moderators rather than lecture us?

Jay, you’re a dealer selling a $16K battery. You might want to consider looking at how some of the other dealers on A’gon conduct themselves, because that’s the kind of treatment I think "most folks" who are audiophiles expect. I don't think your silly claim that you're being "crucified" here is a sound business plan.

viber6

Factor X distortion from Jay’s AC power is the same for both videos and therefore cancels out, so the perceived differences are true.

Actually, you don’t know that. Power quality can vary considerably, from time of day, day of week, even minute-to-minute, depending on where you live and what your local grid looks like. Isn't that part of why Jay got into the $16K battery business in the first place? And of course, if that a/c or arc welder that’s on Jay’s audio circuit powers on, all bets are off.

With the Stromtank, his electrical power quality is likely better than yours.

Maybe. I have dedicated, derated lines and power conditioning and that works in my system. I think it’s cool how some are willing to go the battery route, but that’s not for me. I like the simplicity of getting relatively clean, stable AC power. Although I’ve gone to a lot of trouble to do that, it’s been much less expensive than buying a bank of $16K batteries.

In any event, this isn’t about whose system is "best," is it? That seems like a silly debate. Aren’t we all here to have fun?

viber6

... Jay had many power conditioners, but the Stromtank produced another world of benefits ...

Understood! What I find interesting to question is: What is the benefit of something like a $16K Stromtank battery as compared to a clean, stable, filtered AC line? I suspect the difference in that case is much less than it is for Jay with his problematic AC power.  (Let's set aside the fact that I don't think the battery would be sufficient to power even one of my amplifiers.)

Jay doesn't seem inclined to address his AC power issues, so we may never know the answer for sure.

 

kren0006

... cheering for Viber in this stupid argument  ...

For goodness sake, what aspect of this discussion do you find to be an "argument?" Why is it that asking questions, or raising concerns, is characterized as an "argument?"

This is becoming one of the most unusual threads on A'gon - and it's from a dealer who is presumably seeking to generate some sales. Truly strange!

Now these, below, are arguments, and even rise to the level of being argumentative. You'll never see any content from me like that. I'm here to talk about audio.
 
kren0006

When one hears ad infinitum that nobody really cares for the opinions they are presenting, yet they persist in repeating the same tired objections, it’s akin to an argument.

rbach

Why don't you do yourself and us a favor and move on.

rbach

These two remarks are what most of us, including the OP feel on this thread. Not argumentative at all.

Pretending you know "what most of us" feel and suggesting "Why don’t you do yourself and us a favor and move on" is argumentative. I understand that you don’t see it that way but the deletion of that post suggests the moderators don’t agree with you.

Why is it that we can't talk audio on this thread without provoking this sort of animosity?

rbach

I give up...you win.

No, we're all winners! Being fortunate enough to enjoy music however you choose makes you a winner, too!

I have 5 dedicated outlets with 10 gauge wire and aftermarket outlets. 20a, 20a, 30a, 30a, 30a-220v.

Do you have 30A devices (receptacles) on those 30A lines? If so, when you test power cords, do you change the connectors to 30A plugs?

If you have 20A receptacles on the 30A lines, in many places you’d have a code violation and it’s a potential safety hazard. So that’s problematic.

That 30A 220V line is a real puzzle. Do you actually mean it’s 30A 240VAC? Is that a hardwired connection? If that’s not for an arc welder, dryer, or A/C, what’s it for?

As for some of the spurious noise that was detected in your videos (graphs were posted earlier in the thread) - have you hunted down the source? There were some speculations here that they originated in your AC lines.

viber6

it isn’t clear that Jay really has problematic AC power. I think Jay already answered your question.

The few details Jay mentioned about his AC power revealed some issues and he has dodged the topic since. It looks like he has an A/C unit or arc welder on his "dedicated lines," as well as some potential code violations. Perhaps it was those problems that led him to try the Stromtank, although addressing the AC issues is probably the less expensive solution. Of course, if he’s in a rental, he may not have any choice.

My Shunyata Denali conditioner yields a big improvement in every sonic parameter, and that’s without any work in my 1963 NYC apartment building. I will make a small $1-2K investment in the Amperetime battery and big Giandel inverter to see whether it is an improvement over my Denali.

That will be an interesting experiment!

... buy thick wire and 20a breaker, Buy aftermarket outlet of choice, Find a dude on Angie’s list that does electrical work ... I believe my 6 year old can understand how to do the job too.

I’m sure you do believe that your six year old could install your dedicated lines. And that’s exactly how you’ve ended up with the AC problems that you have, including that funky 30A 220VAC line that your stereo shares with an arc welder or dryer or whatever. Is that hardwired, or cord-and-plug?

... make sure the outlets are in phase so there is no bass cancellation issues ...

Your six year old is mistaken about the bass cancellation thing. But hey - he’s only six!

It’s increasingly easy to see now how your AC issues led you to experiment with batteries as a "solution." They're really more of a workaround than a solution.

I don’t know where this narrative is coming from about me having electrical issues ... So as far as i am concerned folks, most of us have absolutely no business in this hobby due to our terrible electrical system ...

Perhaps you are suffering short term memory loss. Earlier in this thread, another user analyzed your YT video and posted graphs showing it had spurious noises as well as what appeared to be AC harmonics. You were displeased (I’m being kind) and the details you then revealed about your AC power (which you insist even a six year old could have installed) only raised more questions, such as whether you have a 208VAC or 240VAC line that you are using to feed your 120VAC lines. (I know that sounds crazy, but that’s the information that was exchanged. ) A whole bunch of posts were deleted, including yours that contained threats, and Tammy popped into the thread with a gentle warning.

Did that refresh your memory?

It’s not difficult to see what’s happening here. You became a dealer for the Stromtank battery "solution" because you have AC problems. What doesn’t make sense is that you now refuse to acknowledge your journey’s path. Most odd, because much of the history is right in this thread.

As others have noted, it’s possible that you’re in a rental, so there may be little or nothing you can do about your AC issues. But pretending they don’t exist won’t make them go away, and you’ll have to deal them until you have Stromtanks sufficient to power your system.

Jay, installing proper dedicated AC lines isn’t rocket science but it isn’t for six year olds, either. If it’s an option for you, I encourage you to have an expert examine your AC power. He’ll tell you, among other things, why your 30A 120VAC lines are problematic, and he’ll have suggestions that could make a big difference in your system’s sound. The cost will be much less than even one of the small Stromtanks.

viber6

He completely renovated his garage to make a great listening room, created dedicated AC power lines and outlets.

Did he? What’s with that 208VAC or 240VAC line for the a/c or arc welder that he’s also using for his 120VAC outlets?

Even if he has AC problems, that’s the purpose of the Stromtank to clean it up.

Right. But from what I gather, the Stromtank he can afford isn’t sufficient to power an amplifier. So he is still stuck with his AC problems.

Meanwhile, Jay is in denial and acts as though he's never heard any of this before.

carey1110

As far as Mágico paying YouTubers I doubt that. By the time Jay produces this video I’d bet it has cost him quite a bit.

Using paid "social media influencers" on Youtube, Facebook, and other social media sites is exactly how a lot of advertising is done today. Jay probably does have costs associated with producing the videos, which makes it all the more likely that he's being paid. There's nothing wrong with that and Jay has made it clear that as a dealer, he's in this for profit.

What's the big deal? If Jay is doing these videos for free, he can just say so and I think most of us would be willing to take him at his word. But Jay has made it clear that he's a dealer working for profit. There's nothing disrespectful about noting that.

jays_audio_lab

I wish I could defend myself on here ...  I won’t embark on duking it out with anyone ... I have to let the moderators do their job

I've found the moderators here to be very fair and I think everyone here is free to defend themselves. There's no reason you should be subject to any attacks and you should feel free to correct any misstatement.

I'd be very surprised if the moderators were unwilling to delete any false statements made about you. You might have to alert them to the problem first, though.

jays_audio_lab

... mods delete posts that are about a specific person (me) and that aren’t true ...

Egg-zactly Jay, that’s the way it works. You got it wrong earlier in this thread when you argued the opposite:

Unfortunately don’t be surprised if it gets deleted because you are speaking the truth

I really don’t understand much of the angst in this thread, which is certainly unique on all of A’gon. While the many deleted posts make it hard to follow parts of the conversation, the ones that remain suffice to "connect the dots."

Nor do I understand the indignation that Jay, as a social media influencer, may be getting paid for his promotional videos. Personally, I hope Magico is paying him a fistful of dollars for all of his work! Shooting video is time consuming and editing video can especially be tedious. Jay has a loyal, dedicated fan base. Why should he deliver those eyeballs to Magico for free?

Jay has been perfectly transparent that he’s a dealer and has ambitions. He probably doesn’t think profit is a dirty word and neither do I, folks. It makes the world go ’round and I wish Jay nothing but the best.

 

What you just said is only your opinion.  What counts are shootouts that people can hear for themselves ... Some semblance of disciplined scientific evaluations are the only valid method of drawing conclusions, even to yourself in your private listening.  What you do is present your opinions only ...

I think that's all you're going to get from Jay here. He's a showman. You'll need to ante up the $600/year subscription to get the whole "show" and "raw" videos.